Pyxis SP-350 - Instrument Overview; Control Keys; Main Module On;Off; Measurement

5 Instrument Overview
5.1 Control Keys
The SP-350 has three control keys, as shown in Figure 2. The le ( ), right ( ), and ok ( ) keys
are used to launch acons indicated on the LCD display directly above the keys. The labels above the keys
indicate the funcon associated with each key and funcons can be changed in dierent operaon modes.
Figure 2.
5.2 Main Module On/O
To turn on the SP-350: Press momentarily and release.
To turn o the SP-350: Press and hold for about three seconds. Release when the LCD display
turns o. The SP-350 turns itself o aer 60 seconds without user interacon detected. This is done to
conserve baery life.
*
NOTE
*
This auto-me o seng may be customized by the user as desired through the
uPyxis® Mobile or Desktop App.
6 Measurement
6.1 PTSA Measurement
When powered on, the SP-350 will default to the PTSA measurement mode. The water sample can be
transferred to the sample cell using a pipee or lled directly from a faucet, sample bole, or sample
valve.
*
NOTE
*
Special care should be taken when pouring the sample into the cell to avoid air
bubble entrainment, which can interfere with reading accuracy.
Before beginning a measurement, use the sample water to rinse the sample cell at least three mes. Allow
5–10 seconds for the SP-350 to stabilize. The values will be displayed in white with a blue background if
a stable value is reached (Figure 2). For a sample containing 100 ppb PTSA, the measured PTSA should be
stabilized within the range of 98–102 ppb.
SP-350 User Manual service@pyxis-lab.com | +1 (866) 203-8397 5